Historical on-time performance
Salt Lake City to San Jose
585 miData through May 2026Source: US DOT · BTS
Flights on SLC–SJC arrive on time 88% of the time over the last 12 months.
On-time rate88%arrived within 15 min
p90 delay20 min1 in 10 flights is worse (tail risk)
Cancelled0.4%of scheduled flights
based on 1,594 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time93%Medianon timep905 minCancel0.0%Flights30
- SkyWest AirlinesbestOn-time93%Medianon timep905 minCancel0.1%Flights671
- Delta Air LinesOn-time83%Medianon timep9030 minCancel0.6%Flights893
Why flights run late
Delay causes
- Airline61%
- Weather10%
- Air traffic (NAS)6%
- Late aircraft23%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline83%
- Weather0%
- Air traffic (NAS)17%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 6 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly SLC → SJC
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 93% on time.
- Mornings93% on time · p90 5 min · 1,078 flights
- Afternoons88% on time · p90 15 min · 1,164 flights
- Middays86% on time · p90 25 min · 1,567 flights
- Overnights84% on time · p90 25 min · 1,098 flights
- Evenings82% on time · p90 35 min · 577 flights
Best day of week
Tuesdays are the most reliable day to fly this route — 92% on time.
- Tuesdays92% on time · p90 5 min · 743 flights
- Wednesdays89% on time · p90 15 min · 739 flights
- Thursdays87% on time · p90 25 min · 821 flights
- Mondays86% on time · p90 20 min · 824 flights
- Saturdays85% on time · p90 25 min · 702 flights
- Fridays85% on time · p90 20 min · 831 flights
- Sundays85% on time · p90 25 min · 824 flights
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